Description: Shading trouble (White correction). The CCD white scan level is abnormal when the shading.
Causes: Improper connection of the CCD unit flat cable Dirt on the mirror, the lens, and the reference white plate Copy lamp lighting abnormality CCD unit abnormality MCU PWB abnormality (When occurred in the SPF scan position.) Improper installation of the mirror unit
Remedy: Clean the mirror, the lens, and the reference white plate. Check lighting and the light quantity of the copy lamp (SIM05-03). Check the CCD unit. Check the MCU PWB.
Code: E7 16
Description: Abnormal laser output. When the laser output is stopped, HSYNC is detected.
Causes: Laser abnormality MCU PWB abnormality.
Remedy: Replace the LSU. Replace the MCU PWB.
Code: F2 02
Description: Toner supply abnormality Detail When toner near end is detected with the toner supply time of 50% or less. When the toner supply time exceeds 300%.
Remedy: Replace the toner cartridge. Replace the developing unit.
Code: F2 04
Description: •Improper cartridge (Destination error, life cycle error) •Identific t ion error •Model error •Type error •Destination error •Data abnormality •Misc error Detail •The destination of the machine differs from that of the CRUM. •The trade mark code of the CRUM differs. •The company code of the CRUM differs. •The boot program model code does not coincide with the CRUM model code. •When the CRUM type is other than genuine/ conversion/production rotation. •The machine destination differs from the CRUM destination.
Remedy: Use SIM 5-3 to check the copy lamp operations. When the copy lamp lights up. Check the harness and the connector between the CCD unit and the MCU PWB. When the copy lamp does not light up. Check the harness and the connector between the copy lamp unit and the MCU PWB. Replace the copy lamp unit. Replace the MCU PWB. "